Someone who spreads Fear, Uncertainty, and Doubt about a person, product, or company. A FUDdite is also someone ignorant and weak enough to believe FUD when it comes there way, and like a bad virus, they pass the FUD to others.
It's a very negative social interaction, everybody talking uninformed trash about each other, products, etc.

A FUDdite might say...It's obvious the sky will fall if Hillary is elected president, and it's clear that America's young women will not be safe from educated black men if Obama is elected.
"OH NO! Blu-ray hasn't published their usage fees, Blu-ray is trying to keep the FUDdites from being able to make great DVDs and distribute them to teh world, telling the truth that the world must hear!

A person or group of persons that spread Fear, Uncertainty, and Doubt with regards to electronics, software, or any other product or tool. Sometimes used as a marketing tool by competitors to denigrate a product, and sometimes used as a simple means of starting flame wars and attention-getting.

Me and my friends read somewhere that Pioneer Plasma TVs will make you go sterile, so you should buy Panasonic. Or;
Now that HD DVD is dead, Blu-ray is gonna screw everybody because they have a monopoly.
FUDdites sometimes merely make up rumors for the fun of it.